* README.C4X: Remove (finally...).

From-SVN: r43388

gcc/README.C4X

-This file describes the implementation notes of the GNU C Compiler for
-the Texas Instruments Floating Point Digital Signal Processor
-families, TMS320C3x and TMS320C4x (including the C30, C31, C32, C40,
-and C44 chips).
-
-
-Currently, only two code variants are generated---those for the C3x
-and C4x architectures.  Note that the new operand combinations for
-parallel instructions, included in newer silicon revisions, are not
-yet supported.  These should be trivial to add for someone with the
-newer chips and the inclination.
-
-
-While the generated assembly code is fairly similar to that recognised
-by the TI assembler, there are a few differences (currently the machine
-option -mti, designed to enfore compatibility, is not fully
-implemented).  The major difference is the use of the ^ operator to
-load the 16 MSBs of an address or constant for the C4x.
-
-
-The generated assembly code requires the GNU assembler (GAS).  This is
-not currently included as part of the binutils package, due to the
-many hacks required to be compatible with TI's kludged COFF
-implementation, and the binutils not being designed for 32-bit bytes.
-Patches against binutils-2.7.2 can be obtained from
-http://www.elec.canterbury.ac.nz/c4x.  This site also has patches for
-the GNU debugger (GDB), incoporating a cycle accurate simulator that
-can display profiles and histories of code execution, detailing
-pipeline conflicts etc.
-
-
-GCC can be configured as a cross compiler for both the C3x and C4x
-architectures on the same system.  Use `configure --target=c4x' to
-configure GCC for both the C3x and C4x.  Then use the -m30 option to
-generate code for the C30 or -m40 (the default) for the C40.
-
-
-Further installation notes and other optimization patches for the C4x
-target can also be obtained from http://www.elec.canterbury.ac.nz/c4x.
-
-
-A Majordomo mailing list, gcc_c40@atlantek.com.au, exists to discuss
-related issues and suggestions for further optimizations.  To
-subscribe send a message with `subscribe gcc_c40' in the body to
-majordomo@atlantek.com.au.
-
-
-Michael Hayes,  26 Nov 98